Alluvial-Fan Sedimentation along an Active Strike-Slip Fault: Plio-Pleistocene Pre-Kaczawa Fan, SW Poland

  1. M. Marzo and
  2. C. Puigdefábregas
  1. K. Mastalerz1 and
  2. J. Wojewoda2

Published Online: 14 APR 2009

DOI: 10.1002/9781444303995.ch20

Alluvial Sedimentation

Alluvial Sedimentation

How to Cite

Mastalerz, K. and Wojewoda, J. (1993) Alluvial-Fan Sedimentation along an Active Strike-Slip Fault: Plio-Pleistocene Pre-Kaczawa Fan, SW Poland, in Alluvial Sedimentation (eds M. Marzo and C. Puigdefábregas), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444303995.ch20

Editor Information

  1. Barcelona, Spain

Author Information

  1. 1

    Institute of Geological Sciences, University of Wrocław, Cybulskiego 30, 50–205 Wrocław, Poland

  2. 2

    Department of Geology, Adam Mickiewicz University, Strzałkowskiego 5/7, 60–854 Poznań, Poland

Publication History

  1. Published Online: 14 APR 2009
  2. Published Print: 16 SEP 1993

ISBN Information

Print ISBN: 9780632035458

Online ISBN: 9781444303995

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Keywords:

  • Alluvial-fan sedimentation along active strike-slip fault;
  • Sand bar/sheetflood deposits consist of cross- and horizontally stratified sands;
  • Gravel bar/sheet deposits comprise fine- medium-grained gravels;
  • Gravel-bed channel deposits form medium- to coarse-grained;
  • reflection of synsedimentary tectonic activity of the basement;
  • shingling arrangement of the successive fan lobes

Summary

Plio-Pleistocene syntectonic sedimentation along the Sudetic Marginal Fault (SMF), SW Poland, is reflected in the architecture and internal structures of the Pre-Kaczawa alluvial fan. The early phase of sedimentation, related to the dip-slip activity of the fault, resulted in progradation of the alluvial fan onto the downthrown Fore-Sudetic Block. The succeeding strike-slip movements brought about a shingling arrangement of successive fan lobes and the development of deformational structures in the alluvial fan and interfingering proglacial deposits. The cross-cutting relationships define the following sequence of deformations: (i) soft sediment convection deformations: (ii) planar normal faults and shear zones; and (iii) listric faults. The occurrence and orientation of planar faults and shear zones are related to the left-lateral strike-slip shear couple along the SMF. The displacement of the fan apex with respect to the supplying river outlet, the shingling arrangement of successive fan lobes and a characteristic suite of deformations seem to define useful criteria in distinguishing alluvial fans developed in strike-slip regimes.